20210413 has 4 divisors (see below), whose sum is σ = 20254528. Its totient is φ = 20166300.

The previous prime is 20210401. The next prime is 20210431. The reversal of 20210413 is 31401202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20210413 - 2¹⁷ = 20079341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20210393 and 20210402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21363 + ... + 22288.

It is an arithmetic number, because the mean of its divisors is an integer number (5063632).

Almost surely, 2^20210413 is an apocalyptic number.

It is an amenable number.

20210413 is a deficient number, since it is larger than the sum of its proper divisors (44115).

20210413 is an equidigital number, since it uses as much as digits as its factorization.

20210413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44114.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20210413 is about 4495.5992926416. The cubic root of 20210413 is about 272.3903573717.

Adding to 20210413 its reverse (31401202), we get a palindrome (51611615).

The spelling of 20210413 in words is "twenty million, two hundred ten thousand, four hundred thirteen".